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Theory of Fir Superfluorescence

  • R. Saunders
  • R. K. Bullough

Abstract

We show that the second quantised theories of superfluorescence (SF) from rod-like geometries and the semiclassical approach based on the Bloch-Maxwell equations are compatible with each other. From the semi-classical theory we show that two regimes of SF are expected according as τSF,the superfluorescence time, exceeds or is exceeded by τE,the photon escape time: τSF τ τE defines the regime of oscillatory SF characterised by a first pulse intensity α τSF-2 and a small number of subsequent ringing pulses; τSF ≪ τE defines a regime of steady oscillation characterised by a first pulse intensity α τSF−1 and a steady train of similar ringing pulses. Diffraction or other losses from a rod-like geometry damps the ringing in the oscillatory SF regime and single pulse emission without subsequent ringing is possible in this regime. Pulse widths τW and delays tD depend on damping:ringing intensities depend on this and very significantly on the initial conditions. The two spatially inhomogeneous fields travelling in opposite directions inside a rod damp each other’s ringing. We summarize the difficulties which still prevent the provision of a comprehensive ab initio second quantised theory of SF from extended systems.

Keywords

Spontaneous Emission Diffraction Loss Semiclassical Approach Steady Oscillation Ringing Pulse 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1977

Authors and Affiliations

  • R. Saunders
    • 1
  • R. K. Bullough
    • 1
  1. 1.Department of MathematicsUniversity of Manchester Institute of Science and TechnologyManchesterUK

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